Carbureter fuel control



v. E. WASSERLEIN.

CARBURETER FUEL CONTR'OL.

' APPLICATION FILED APLQ. i917. 1,392,724. Patented Oct. 4, 1921.

2 SHEETS-SHEET1.

Vl E. WASSERLEIN.

CARBURETER FUEL coNTRoL. APPLICATION FILED APR. 9. 1917.

Patented Oct. 4, 1921.

2 SHEETS-SHEE [irse ,s-rafras-` referir orifice.

' VICTORl E. wAssnrcLErN, or NEW Yoan, N. Y., .essIeINoR To wAssERLEIN, rRoEs y COMPANY, ING., a ooRroneTrON or NEW YORK.

To all whomfz't may concern: i A

Be it known that I, VICTOR E. VVAssnRLnIN,

a citizen of the United States, and resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Carbureter Fuel Controls, offwhich the following is a specification.. f v This invention relates to limprovements'in the atomizer type of carbureters and relatesmore especially to fuel control means therefor. ,Y

The obj ect vof theinventiOn vis-'to provide air andV fuel control means ,for a carbureter wherebyrichnessof the mixture fed to, the intakemanifold of the engine maybe varied andineans.v for protecting the carbureter against backfire from the'engine provided.

l through the. combined fuel fand air valve and n Another object is to provideja novelY form ofcharge receiving' and hmijging chamber whereby proper, proportionsv of air will be admitted to regulate the richness of the combustible chargeV under varyingconditions.

Another object is ,to provide a compensating valve for preventing backre to the carbureter. .u y. l v

With these andother Objects in view,the invention consists in certain novel .features of construction as hereinafter shown and described, and thenspecifically pointed out in 'the claimspan'd inthe drawings illustrative of the preferredembodiment of theinven- 'l i tion.

In-the accompanying drawing: Y

Figure .1 .representsy a :vertical section through the carbureterwith the valves in neutral or. normal position. T' Y Fig. 2 is a fragmentary vertical. section charge forming chamber with the valves shown closed ready for priming.

F ig. Sis a similar view taken YVat right Y angles to Figs, 1 and 2 Showing the air valve and the nozzle in full opennvposition, the valve and` nozzle beingfshown in lside eleva- Fig. 4 is aidetail A:perspec'tive View of the combined air valve and charge forming chamber. p v

Fig..5 is a detail perspective view of the compensating valve constituting a partV of this invention. .l g. l

ig. 6` is" a fragmentary vertical section i A A, Specflcation of Letters Patent.`

CARBURNTNR runt CONTROL.

1917. Serial No. 160,776.

nally screw threaded lower portionl 3 into which isthreaded a bearing element 4 in the form of the usualjspider employed in devices of this characteri and which permits the passage therethrough .of air to the chamber formed within the casing 1.

Patented Oct. 4,1921.

v A fuel supply nozzle 6 is slidably mounted in the bearing element l and has its upper extremity reduced as at 7 while its lower extremity is threaded and engaged with a rotary plug valve casing 8 connected with a -flexible fuel supply conduit 9 leading to a suitable source of Supply (not shown). A series of teeth 10 is formed on one side of the nozzle 6 and constitutes a rack with which a pinion 18 meshes and whereby the l'said nozzlev may be reciprocated longitudinally to control the fuel and air supply to the engine. A Y

A cross rod 5 is arranged in the outlet conduit 1a of the carbureter casing with the ends thereof suitably `engaged with the opposed walls of said conduit and which'forms a support for a compensating valve 20 depending therefrom Vby a suitable -stem 21. This valve 20 is designed to coperate with the `reduced nozzle end 7 for a purpose presently to. be described and it is equipped with laterally extending fingersV 21 which form guides for the valve.

A tapered air controlling valve 11 which is here shownV substantially cone-shaped has beveled-webs 12 lformed, on the lower sleeve portion 11a thereof at diametrically opposite points. This valve 11 is normally seated in the reduced portion2 of the carbureter casing and has formed therein in alinement and communicating with the sleeve 11a of the valve a charge receiving and mixing chamberr13 the upper end of which is reduced and opened at the apex Vof the valve 11 to Vform a discharge nozzle as indicated by the numeral 14C. Converging air ducts 15 cornmunicate with an annular channel-like bore of the charge mixing chamber 18 and open through the under side' of the valve 11 outside the sleeve 11iL to permit ingress of air. to the chamber 13. To normally ina-intain the valve'11`on its seat,V a beaiingcol-V Vlar 16 is mounted on the supply nozzle-6 being preferably threaded thereon and, is

11 on its seat and toreturn it togseated posi# "'15 u inafter more fully described.

tion after it has been o'penedas will be here- The sleever11fL has a longitudinally ex-I' tending slot 12 torreceive Va pin 7 whichV projects laterally from the supply lnozzle 6 to'provide for independent movement of the nozzle for 'a predetermined distance.

From 'the'v above description it will be obvious that when the vsupply nozzle is moved downwardly withiiithe mixing'chamber 13 from the position shown in Fig. 2, to the position shownin 1 the pin 7 will beV Vpositioned at the lower end Vof slot 12 so o that the continued downward movement of nozzle 6 will operate'to unseatvalve'11,

thereby permitting a maximum quantity of airto flow through the ducts 15 vin said valve lland around the latter into theroutc let or conduit lgthereby forming a more perfect combustible mixture, the'fuel being supplied through valve 21 and the nozzle 6. I/Vhen the nozzle 6 is moved upward from the position shown in Fig. 1 to the position Vshownin Fig. 2itwill close the air ducts 15 in valve 11 and said valve will be forced b yrcut off the air supply to the conduit 1a as shown in Fig. 2. kThis position of the valve andthe nozzle' is desirable'forpriming of the engine forwhich purpose a rich' mixtureqis necessary. It willthus be seen that by adjustment :of nozzle '.6 the air supply maybe increased Vordecreased or entirely cut off and such adjustment is under the con'- i trol of the operator. The movement of this nozzle 6 also controls the opening and closing of the plug valve 24 as will be liereinafter more fully described.

The movement ofthe nozzle 6 to its downward limit provides for an additional supply of airarouiid the valve'lll to the intake conduit ,12L while the fuel passage is slightly restricted by movement of the valve 24. The

restriction of the fuel 'passage tends to rey 'l duce the flow 4of fuel, while the increased function of the engineat higher speeds tends p to increase said flow. As a result a mixture of proper proportions,'neither too rich in fuel contents nor'toole'an is provided.` The nozzle is raised andlowered by meansY of a pinion 18 engaging the rack 10, said pinion 1 V`downwardly within the casing being rotatably mounted in the bearing element l and carrying onV ,its stub shaft an apertured operating armr-19 with which suit-V ableV actuating means V(not shown) Vis Vengaged. This actuating means may4 extend to -rthe'dash or spine other point convenient to the operatQl. By rocking thearm 19 the slidable nozzle6 will be moved upwardly or Y Y vided one with an eye and the 'other' with'. Y

divergent-guide armsr21which operate withinfthe nozzle 6.7.

soV

A depending arm'22 secured'tothe lower' portion of element-f1 is engagedfby a bifurcated operatingarin'23 secured at Vone end toV the rotatable plug valve 24's() that the move'- ment of thenozzle in either direction will turnvalve24v to decrease the supply Yof fuel fed therethrough. Y Y .-7

In Fig. 6 a slightly modified form of comi bined air valve Vand charge forming` chamber V11 is provided'. Theiupper-extremity of the supply nozzle 6 ofl this form .oftliein- I i vention hasA a reduced portion l 6: while, ad-

jacent thereto thebaSe of valvei11 hasv an `enlargedopeningll forming a chamber to receivealcoiled spring 17whi'ch operates o therY figures. By this arrangement a more compactV form is afforded andthe pin-7 and slottedsleeve of the structure shownin Figs. 1 and?) is dispensed*with?i Itis of 'in the mannersimilar to spring 17.-'in the' f course understood that these interengaging 4 e shoulders perform theV same function as the pin and slot connection of the other figures. to seated position by the spring 17 and there- Y The term fuePfas used in V'thisidescrip-V tion refers tohydrocarbon fuels such as are commonly used in internal combustion Yenginesgto combine 'withairito producev4 the tionis disclosedV in the drawings and 'set forth in the specification, but it will -be understood that" any V'modifications within the scope Vof the claims-maybe made inthe construction without departing from the principle ofthe invention or sa'criiicing any of its advantages.- 1

f What I claim is: j` j 1. InV a carbureter, `a casing,z the flower portion of which servesas an air. chamber,`

izo

a fuel nozzle slidablewithinthe casing, an Y air'valve mountedwon the Vfuel nozzle "and havingl a mixing chamberfcommunieating with air ducts formedftherein, said `fuel nozzle normally extending within the mixing chamber, a' pin Von the vfuel nozzle for Y 'limiting itsmovement with respect tof'the air valve, saidair valveV cooperating with said nozzle for cutting V'offv the'aii supply at Y iio the inventhe termination of the upward movement of the fuel nozzle, and a compensating valve for controlling the flow of fuel from said fuel nozzle.

2. In a oarbureter, a casing the lower portion of which serves as an air inlet chamber while the upper portion is reduced to form a seat and a mixture passage, an air valve disposed in the casing having a depending sleeve portion and formed with a mixingchamber in its top in communication with the sleeve portion and further provided with ducts for establishing communication between the mixing chamber and the air chamber, a fuel supply nozzle vertically slidable through the bottom of the casing and slidably arranged in the sleeve portion of the air valve and communicating with the mixing chamber to coaet therewith in controlling the passage of air through the valve, resilient means disposed about the nozzle and exerting its tension against the air valve to normally hold the air valve seated, a pin and slot connection between the nozzle and the air valve for permitting of an upward independent sliding movement of the nozzle relative to the air valve yet insuring of the downward movement of the air valve when the nozzle is moved downwardly a predetermined extent, a rod carried by the fuel supply nozzle and a pinion connected with means for manually operating the same for actuating the nozzle and consequently the air valve for regulating the quality of the mixture.

In testimony whereof, I aflix my signature hereto.

VICTOR E. WASSERLEIN. 

